How to add subview inside UIAlertView for iOS 7?

Question

I am having an application on iTunes store which displays some UILabel and UIWebView on UIAlertView. According to session video,

Answer 1

The custom alert view on github linked in the accepted answer is great. However, you cannot launch this directly from the viewdidload method. The enclosing UIView is attached to the app's first window, so you have to wait a split second. I added this code to viewdidload which I found as a closed issue.

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.5f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
      // Open the dialog here
   });